GB/T 6163-1985 in English

《GB/T 6163-1985调频广播接收机测量方法》由TC242（全国音频、视频及多媒体系统与设备标准化技术委员会）归口，主管部门为工业和信息化部（电子）。
本标准适用于工作频率为87-108MHz的单声和立体声调频广播接收机（包括调谐器、汽车收音机、组合机中的调频收音部分；以及专用调频广播接收机――以上统称接收机）进行电声性能测量的标准测量方法。

Section 1 General

1 Application scope

This standard is applicable to the standard measuring method of electroacoustic performance measurement of monophonic and stereophonic radio receivers for FM broadcast transmissions (including tuner, car radio, FM receiving part in combinational machine, as well as dedicated radio receivers for FM broadcast transmissions——all the above are referred to as receivers) .

2 Terms and requirements

2.1

values for voltage and current

root mean square (r.m.s.) quantities, unless otherwise stated

2.2

presentation of level

Levels of power, voltage and field strength are expressed in decibels, as shown in Table 1.

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2.3

carrier frequency

the mean value of the instantaneous frequency or the frequency generated in the absence of modulation, and for a perfect modulation system in which no d.c. component and no non-linear distortion are involved, the two values are the same

2.4

instantaneous frequency deviation

the difference between the instantaneous frequency of the modulated carrier frequency signal and the carrier frequency

2.5

peak frequency deviation

the peak value of the instantaneous frequency deviation

2.6

maximum system deviation

the maximum peak frequency deviation specified for the system under consideration, which is ±75 kHz in China

2.7

standard modulation frequency

see Table 2 for optimized modulation frequency

Section 1 General
1 Application scope
2 Terms and requirements
3 Main test circuit
4 Measuring instrument
5 Measuring conditions
Section 2 Sensitivity
6 Signal-to-noise ratio
7 Sensitivity
8 Input-output characteristics
Section 3 Rejection of interfering signals
9 Two signal selectivity
10 Intermediate frequency rejection
11 Image frequency rejection
12 Spurious response rejection
13 Capture ratio
14 Rejection of amplitude modulation
15 Tuning characteristics
16 Radio-frequency intermodulation
Section 4 Fidelity
17 Total voltage harmonic distortion
18 Total acoustic pressure harmonic distortion
19 Maximum active power
20 Total voltage frequency characteristics
21 Total acoustic pressure frequency characteristic
Section 5 Other performances
22 Hum
23 Single-signal whistles
24 Self-oscillation
25 Audio frequency mechanical vibration
26 High-frequency mechanical vibration
27 Frequency range
28 Intermediate frequency
29 Tuning indication accuracy
30 Scale error
31 Change in tuning frequency
32 Automatic frequency control characteristics
33 Local oscillator radiation
Section 6 Stereo
34 Stereo signal-to-noise ratio
35 Stereo sensitivity
36 Separation
37 Non-linear crosstalk
38 Balance degree
39 Stereophonic identicality
40 Stereo intermodulation
41 Rejection to pilot frequency, subcarrier frequency and their harmonics
42 SCA rejection